THE ARRANGING OF EXAMPLES IN THE CABINET. 17 



Pieris Protodice, male. P. Protodice, female. 



male, reversed. " " female, reversed. 



Pieris Yernalis, male. P. Vernalis, female. 



male, reversed. " " female, reversed. 



Pieris Callidice, male. P. Callidice, female. 



" male, reversed. " " female, reversed. 



and so on, ad libitum, if you have the specimens. 



If I have but three examples of a species I place them thus : 



Pieris Autodice, male. P. Autodice, female. 

 P. Autodice, male, reversed. 



putting the third, male or female as it may be, in the middle, below the two 

 upper ones. When I acquire the fourth example I remove the third, and place 

 it directly under the upper one of its own sex, and the newly-acquired fourth 

 one under the other upper example. 



If 1 have only a single example of a species I place it in the middle be- 

 tween the two rows, like P. Leuoodice below : 



Pieris Callidice, male. P. Callidice, female. 



P. Leucodice, male. 

 Pieris Autodice, male. P. Autodice, female. 



When I get its mate I push the one I already have directly under the fly 

 above, and put the new one aside of it. 



This plan shows the whole insect male, female, upper and under surface 

 at a glance, and besides gives room for additions, for if I get an example of 

 another species of the Pieris near P. Leucodice, before I get the second Leu- 

 codice, I can temporarily let it occupy the position that the future P. 

 Leucodice will have, until I have the good fortune to obtain the latter. 



Of course, if you have varieties of the same species, or aberrant forms, or 

 monstrosities, you place them under the examples of the normal form of what- 

 ever species they may have sprung from. Also, you can place below them 

 the preserved larva, chrysalids, as well as any parasites that infest the species, 

 so far as you may be able to obtain them. 



LABELING THE EXAMPLES, 



which is of incalculable importance, can be done best as follows : you should 

 have the labels of white card-board \vith plain black borders printed on them, 

 and three or four dotted lines within ; on these you write, or print with pen 

 and ink, the name, author's name, synonyms when necessary, name of work 

 in which the species was first described, locality where found, and if it be a 

 type specimen state the fact. Here are examples : 



